                       :step     "1"
                       :onChange #(set-grid-size! app (js/parseInt (.. % -target -value)))})
 
-                    (dom/label nil "playback speed:")
+                    (dom/label nil "playback speed")
                     (dom/input #js {
                       :type     "range"
                       :value    (- tick-ms)



(om/root
    (fn [{:keys [stream cells win-state moves tick tick-ms grid-size media-error?] :as app} _]
      (reify
        om/IDidMount
        (did-mount [_]

                      #js {:className "move-count"}
                      (str move-count " move" (when (> move-count 1) "s")))

                    (dom/label nil "show numbers?")
                    (dom/input #js {
                      :type     "checkbox"
                      :checked  show-nums
                      :onChange #(om/update! app :show-nums (not show-nums))})

                    (dom/label nil (str "grid-size (" grid-size \× grid-size ")"))
                    (dom/input #js {
                      :type     "range"
                      :value    grid-size
